# class A:
#     def __init__(self, age):
#         self.__age = age
#
#     @property
#     def age(self):
#         return self.__age
#
#     @age.setter
#     def age(self, age):
#         self.__age = age
#
#     def __str__(self):
#         return self.__age
#
#
# aa = A("a")
# aa.age = "b"
# print(aa.age)
# print(aa)
